Finding the Fourth Proportional to 9,111.48, 13,670.55 and 3,847.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.48 : 13,670.55 = 3,847.80 : x
2. Step 2: Convert to fraction form
   9,111.48/13,670.55 = 3,847.80/x
3. Step 3: Cross multiply
   9,111.48x = 13,670.55 × 3,847.80
4. Step 4: Simplify right side
   9,111.48x = 52,601,542.29
5. Step 5: Solve for x
   x = 52,601,542.29/9,111.48
6. Step 6: Final answer
   x = 5,773.11